Explosive-engine.



J. W. MEAKER.

BXPLOSIVE ENGINE. APPLICATION-FILED SEPT. 30, 1910.

1 015 502 I Patented Jan. 23, 1912.

4 SHEBTSSHEET 1.

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J. W. MEAKER.

EXPLOSIVB ENGINE.

APPLICATION FILED 8131230, 1910.

Patented Jan; 23, 1912.

4 SHEETS-SHEET 2.

J. W. MEAKER.

EXPLOSIVE ENGINE.

APPLICATION FILED snnuso, 1910.

1,015,502. Patented Jan. 23, 1912.

4 SHEETS-SHEET 3.

awe/Mo's 3011- W. WQRQC? J. W. MEAKER.

BXPLOSIVE ENGINE. I

APPLICATION FILED 8321230, 1910.

Patented Jan. 23, 1912.

4 SHEETS-SHEET 4.

m i 8 \m\ I m 5 M m m m JOHN W. MEAKER, OF DETROIT, MICHIGAN.

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Specification of Letters Patent.

Patented Jan. 23,1912.

Application flled'september 30, 1910. Serial No. 584,684.

To all whom it may concern.-

Be it known. that I, JOHN W. MEAKER, a citizen of the United States of America, residing at Detroit, in the county of-Wayne and State of .Michigan, have invented certain new and useful Improvements in ExplosiveEngines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to internal'combus tion motors and to an arrangement of the piston and cylinder whereby they are effectively cooled interiorly and exteriorly.

The invent-ion consists in the matters hereinafter set forth, and more particularly pointed-out in the appended claims.

In the drawings, Figure 1 is a plan view of a motor embodying features of the invention; Fig. 2 is a ,view in section on or about line 2-2 of Fig. 1; Fig. 3 is a view in section at right angles to that shown in Fig. 2; Fig. 4 is a view in section showing a modification of a piston rod connection; Fig. 5 is' a view showing a modification of the air circulator means;Fig. 6 is a view of another arrangement of the air circulatormeans; and Fig. 7 is a view in section on line 9-9 of Fig. 6 slightly reduced.

As herein illustrated, an open ended cylinder 1 is mounted in upright position on a suitable base in which a main crank shaft 3 is j ournaled. An annular flange 4 is formed on the inner face of the cylinder. A piston 5 that is open at its outer or outboard end is reciprocable in the flange and has an annular offset 6 or enlargement on its inner or crank end cooperating with the flange to form an annular explosion chamber. In order to obtain a double acting piston, a second annular shoulder 8, or enlargement may be formed on the outboard endof the piston which for convenience of construction and assembling is the inner face of a collar 9 screw-threaded or otherwise detachably secured in the piston end to fit the cylinder. Suitably disposed packing rings 10 in the cylinder flange and on the piston and collar prevent leakage.

Any preferred form of valve mechanism controls the supply and exhaust of the annular explosion chambers. As herein indicated, puppet inlet valves 12 and outlet or exhaust valves 13 operated in timedrelation to the piston movements by cam shafts 14,

. open and close ports or assages into each chamber adjacent the cylinder flange. The

shafts are driven" through suitable gear or.

the like, not shown, by the main shaft.

The piston is connected at its closed lower end and is coupled by a wrist-pin 15 and connecting rod 16 ,to the crank shaft. In the preferred form of construction, a cap 17 that is deeply hollowed, is secured by a flange 18 at its rim in the screwthreaded and counterboredcrank end of the cylinder, and is so proportioned that an interval is formed between it and the piston wall to insure an air space for the full length of the adjacent explosion chamber. Or the cap may have an annular enlarged rim 19 as shown in Fig. 4, into which the end of the piston is inserted and suitably secured, the parts being arranged to permit free circulation in the interior of the piston to the lower end thereof. In such instance, the outer shoulder is formed with a permanent or integral outer offset where two chambersare desired.

In Fig. 7 there is shownmeans for insuring proper cooling of the outer wall of the circular chambers. This consists of an outer jacket 28 spa ed from the cylinder wall. On the instroke, cool air is drawn in around the opening at the lower end of the jacket up past the combustion chambers. This effectively cools both walls of the explosion chambers. To further insure the cooling of theouter wall a diaphragm 25 as indicated'in Figs. 7 and 8 may be connected by a tubular extension 31'of an outer jacket 32- rounding over the upper margin of the cylinder cylinder to at least a point below the lower compression chamber. This outer jacket may be cut off, as indicated in Figs. 8 and 9, and the'annular opening closed by a diaobtained at the hottest zone or point on the cylinder walls.

One feature of this construction is the very lightweight of the reciprocating parts i as the cylinders coupled as shown give the efl'ect of the conventional type four cylinder motorr Furthermore, the cap closing the inner end, of the piston may be of light alloy, such as aluminum or the like, as the cap is not exposed to the high heat 'of the explosion chambers.

Another feature is the mounting of the wrist in the cap so.

90 walls and enveloping the that the integrity of the piston wall'is maintained and the leakage inevitable'where the pin is journaled in the wall is avoided.

- tween its ends,

' tween its ends, a piston reciprocable through Obviously, changes in the details of con-- struction may be made without departing from the spirit of the invention, and I do not care to limit myself to any particular form or arrangement of parts. 7

I claim as my invention 1. In an explosive engine, an open ended cylinder having an'inner annular flange intermediate its ends, a piston open at its the flange having an open 'outer end'and a closed inner end both enlarged to fi't-the cyl inder, a jacket 'forming an airspace over the cylinder end with its lower end opening directed toward'the lower end of the cylinder, and a diaphragm of less diameterthan the piston bore secured in the cylinder concentrically with the piston near the limit'of outward motion of. the inner end thereof by a tubular extension of the jacket. a

3. In an explosive engine, an open ended cylinder'having aninner annular flange bethe flange having an open outer endand-a closed. inner end both enlarged-to fit the cylinder, a jacket forming an air 'space over the cylinder end with its lower end a piston reciprocable through opening directed toward thelower end of the cylinder, a diaphragm of less diameter than the piston bore secured in the'cylmder concentrically with the piston near the limit of outward motion of the inner end thereof by a tubular extension of the jacket, and a diaphragm closing the'annular opening between the lower end of the jacket and the adjacent cylinder wall provided with a plurality of. apertures disposed to direct a maximum quantity of expelled air against the heated portions of the cylinder.

4. In an explosive engine, an open-ended therein, an open ended piston and reciproments on the piston ends fitting the cylinder and forming annular combustion chambers with the cylinder flange,,and a cap closing the inner end ofthe piston. t '5. 'Inan explosive engine, a base, a cylinder open at both ends mounted-therein and provided, with an inner annular flange between its ends, an open ended piston having a body that fits the cylinder .flange and flanged ends that fit the body of the cylinder and form with the cylinder flange annular explosion chambers, a crank shaft in vthe base, a cap secured at its rim to the inner end of the piston and provided with a concave body extending well into the p1ston, a wristp n secured across the recessof the body and a connecting rod coupling the Wrist pin and the crank shaft.

Intestimony whereof I aflix my signature in presence of two witnesses.

I I JOHN W. MEAKER.

Witnesses; OTTO F. BARTHEL, C. R. S'rIoKN'EY.

cylinder, an inner, central annular flange cable the flange, outer annular enlarge- 

